def testGetGoodRevisionNoLastPass(self):
failed_steps = {
'a': {
'current_failure': 124,
'first_failure': 124,
}
}
builds = {
124: {
'chromium_revision': '124_git_hash',
'blame_list': ['124_git_hash']
}
}
failed_steps = BaseFailedSteps.FromSerializable(failed_steps)
builds = FailureInfoBuilds.FromSerializable(builds)
failure_info = CompileFailureInfo(
build_number=124, failed_steps=failed_steps, builds=builds)
self.assertIsNone(ci_failure.GetGoodRevision(failure_info))
def testGetGoodRevision(self):
failed_steps = {
'a': {
'current_failure': 124,
'first_failure': 124,
'last_pass': 123
},
'b': {
'current_failure': 124,
'first_failure': 124,
},
'c': {
'current_failure': 124,
'first_failure': 123,
'last_pass': 122
},
}
builds = {
122: {
'chromium_revision': '122_git_hash',
'blame_list': ['122_git_hash']
},
123: {
'chromium_revision': '123_git_hash',
'blame_list': ['123_git_hash']
},
124: {
'chromium_revision': '124_git_hash',
'blame_list': ['124_git_hash']
}
}
failed_steps = BaseFailedSteps.FromSerializable(failed_steps)
builds = FailureInfoBuilds.FromSerializable(builds)
failure_info = CompileFailureInfo(
build_number=124, failed_steps=failed_steps, builds=builds)
self.assertEqual('122_git_hash', ci_failure.GetGoodRevision(failure_info))
def HeuristicAnalysisForTest(heuristic_params):
"""Identifies culprit CL.
Args:
heuristic_params (TestHeuristicAnalysisParameters): A structured object
with 2 fields:
failure_info (TestFailureInfo): An object of failure info for the
current failed build.
build_completed (bool): If the build is completed.
Returns:
A TestHeuristicAnalysisOutput object with information about
failure_info and heuristic_result.
"""
failure_info = heuristic_params.failure_info
master_name = failure_info.master_name
builder_name = failure_info.builder_name
build_number = failure_info.build_number
# 1. Detects first failed builds for failed test step, updates failure_info.
failure_info = ci_failure.CheckForFirstKnownFailure(
master_name, builder_name, build_number, failure_info)
# Checks first failed builds for each failed test.
ci_test_failure.CheckFirstKnownFailureForSwarmingTests(
master_name, builder_name, build_number, failure_info)
analysis = WfAnalysis.Get(master_name, builder_name, build_number)
analysis.failure_info = failure_info.ToSerializable()
analysis.put()
# Lacking chromium_revision indicates something is wrong in Findit,
assert failure_info.chromium_revision, (
'No end_revision when pulling change logs.')
# 2. Extracts failure signal.
signals = extract_test_signal.ExtractSignalsForTestFailure(
failure_info, FinditHttpClient())
# 3. Gets change_logs.
change_logs = git.PullChangeLogs(
ci_failure.GetGoodRevision(failure_info), failure_info.chromium_revision)
# 4. Gets deps info.
deps_info = deps.ExtractDepsInfo(failure_info, change_logs)
# 5. Analyzes the test failure using information collected above.
heuristic_result, suspected_cls = AnalyzeTestFailure(
failure_info, change_logs, deps_info, signals)
# Save results and other info to analysis.
build_failure_analysis.SaveAnalysisAfterHeuristicAnalysisCompletes(
master_name, builder_name, build_number, heuristic_result, suspected_cls)
# Save suspected_cls to data_store.
build_failure_analysis.SaveSuspectedCLs(
suspected_cls, failure_info.master_name, failure_info.builder_name,
failure_info.build_number, failure_info.failure_type)
# Monitors analysis status change.
# Only record one metric for each analysis.
RecordTestFailureAnalysisStateChange(master_name, builder_name,
analysis_status.COMPLETED,
analysis_approach_type.HEURISTIC)
return TestHeuristicAnalysisOutput(
failure_info=failure_info,
heuristic_result=TestHeuristicResult.FromSerializable(heuristic_result))